Command failed, please check log for more info
2012-08-29 23:36:18 CRITICAL nova [-] --fixed_range_v4 or --fixed_range_v6 is required to create a network.
2012-08-29 23:36:18 TRACE nova Traceback (most recent call last):
2012-08-29 23:36:18 TRACE nova   File "/usr/bin/nova-manage", line 1746, in <module>
2012-08-29 23:36:18 TRACE nova     main()
2012-08-29 23:36:18 TRACE nova   File "/usr/bin/nova-manage", line 1733, in main
2012-08-29 23:36:18 TRACE nova     fn(*fn_args, **fn_kwargs)
2012-08-29 23:36:18 TRACE nova   File "/usr/bin/nova-manage", line 745, in create
2012-08-29 23:36:18 TRACE nova     raise exception.NetworkNotCreated(req=req)
2012-08-29 23:36:18 TRACE nova NetworkNotCreated: --fixed_range_v4 or --fixed_range_v6 is required to create a network.
2012-08-29 23:36:18 TRACE nova
2012-08-29 23:36:24 DEBUG nova.utils [req-6f5baa42-d824-4665-a6d5-160d13a64882 None None] backend <module 'nova.db.sqlalchemy.api' from '/usr/lib/python2.7/dist-packages/nova/db/sqlalchemy/api.pyc'> from (pid=11918) __get_backend /usr/lib/python2.7/dist-packages/nova/utils.py:658
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